Oshiego no Kyonyuu Seiso Haha ga Akogareno Moto Dokyuseidattanode Oyako NTR-chu Dashi Haramase suru Hanashi

The protagonist is the advisor for the school’s swimming club.

On the day of a public practice session, he discovers that the mother of his favorite student, Natsune, is actually Chihiro—the beautiful woman he worshipped and used as “fantasy material” during his own student days.

Seeing that Chihiro has matured into an even more alluring woman than before, he is consumed by a desire to make her his own. Unable to suppress his urges, the protagonist abuses his authority as an advisor. He demands a one-night stand from Chihiro, using her daughter’s recommendation as leverage.

Torn between her love for her husband and her devotion to her daughter’s future, Chihiro reluctantly accepts the deal. However, having only known her passionless husband, she is no match for the protagonist’s relentless, overwhelming lust. She is utterly broken and conquered by the intense pleasure.

“If you don’t satisfy me, the deal is off.”

With these words, the protagonist continues to pressure her, deepening their illicit relationship. He carves wave after wave of ecstasy into Chihiro—a woman who had never known a “true male” until now.

Eventually, Chihiro falls into a state of total corruption. Prioritizing her role as a fawning, serving “masochistic sex toy” for the protagonist over her love for her family, her descent is complete.

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